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Enables the selected library to be used at link time.



Where lib is one of:


Specifies that the full ARM runtime libraries are selected at link time. This is the default.


Specifies that the C micro-library (microlib) is selected at link time.


This option can be used with the compiler, assembler, or linker when use of the libraries require more specialized optimizations.

This option can be overridden at link time by providing it to the linker.